Answer:
x=6,y=13
Step-by-step explanation:
Eliminate the equal sides of each equation and combine.
x+7=2x+1
Solve x+7=2x+1
x=6
Evaluate yy when x=6
y=13
The solution to the system is the complete set of ordered pairs that are valid solutions.
(6,13)
The result can be shown in multiple forms.
Point Form:
(6,13)
Equation Form:
x=6,y=13
Lets take into account that we are solving for a. To solve for a we must add like terms:
a+16=32
-16=-16
------------
a=16
The answer has to be choice A.
If a squareroot is multiplied by the same (like your example) it turns the number in squareroot as natural number.
squareroot 13 • 3 squareroot 13 = 13•3= 39
Hope it helps!
#MissionExam001
Answer:
5 (x-2) (x²+2x+4)
Step-by-step explanation:
Stating with 5x³ - 40, the want to simplify the x part by extracting the common factor, so
5x³ - 40 = 5(x³-8)
Now to factor x³-8, we can rewrite it in the format x³-2³, right?
And there's a formula to obtain x³-y³, which is the Difference of Cubes formula that goes like this: x³-y³= (x-y)(x²+xy+y²)
So, we apply this formula replacing the y with our value of 2:
x³-2³= (x-2)(x²+2x+2²) = (x-2)(x²+2x+4)
So, overall, we have 5x³ - 40 = 5 (x-2) (x²+2x+4)
Answer:
the 8th exterior angle is 49 degrees
Step-by-step explanation:
The sum of the exterior angles of an octagon is 360 degrees
(this is true for all polygons)
42°+55°+ 39°+ 20°+ 62°+45°,+ 47+x = 360
combine like terms
311+x=360
subtract 311 from each side
311-311 +x = 360-311
x=49
